JeVois  1.2
JeVois Smart Embedded Machine Vision Toolkit
UserInterface.H
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1 // ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
2 //
3 // JeVois Smart Embedded Machine Vision Toolkit - Copyright (C) 2016 by Laurent Itti, the University of Southern
4 // California (USC), and iLab at USC. See http://iLab.usc.edu and http://jevois.org for information about this project.
5 //
6 // This file is part of the JeVois Smart Embedded Machine Vision Toolkit. This program is free software; you can
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14 // Tel: +1 213 740 3527 - itti@pollux.usc.edu - http://iLab.usc.edu - http://jevois.org
15 // ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
16 /*! \file */
17 
18 #pragma once
19 
21 
22 namespace jevois
23 {
24  //! Abstract base class for a string-based user interface
25  /*! Users interact with the JeVois hardware by issuing text commands and receiving text answers. UserInterface is an
26  abstract base class for such communications, with derived classes Serial (on the platform hardware, using hardware
27  serial and serial-over-usb) or StdioInterface (on host, using user inputs and outputs in the terminal).
28 
29  See \ref UserCli for the user documentation of the command-line interface.
30 
31  \ingroup core */
32  class UserInterface : public Component
33  {
34  public:
35  //! Constructor
36  UserInterface(std::string const & instance);
37 
38  //! Destructor
39  virtual ~UserInterface();
40 
41  //! Read some bytes if available, and return true and a string when one is complete (RETURN pressed)
42  /*! str is untouched if user input is not yet complete (RETURN not yet pressed). The RETURN (end of line) marker
43  is not copied into str, only the characters received up to the end of line marker. */
44  virtual bool readSome(std::string & str) = 0;
45 
46  //! Write a string
47  /*! No line terminator should be included in the string, writeString() will add one. In the Serial derived class,
48  this will be using the line termination convention of serial::linestyle to support different styles (CR, CRLF,
49  LF, etc). */
50  virtual void writeString(std::string const & str) = 0;
51 
52  //! Enum for the interface type
53  enum class Type { Hard, USB, Stdio };
54 
55  //! Derived classes must implement this and return their interface type
56  virtual Type type() const = 0;
57  };
58 } // namespace jevois
virtual void writeString(std::string const &str)=0
Write a string.
UserInterface(std::string const &instance)
Constructor.
Definition: UserInterface.C:21
virtual bool readSome(std::string &str)=0
Read some bytes if available, and return true and a string when one is complete (RETURN pressed) ...
A component of a model hierarchy.
Definition: Component.H:176
Type
Enum for the interface type.
Definition: UserInterface.H:53
Abstract base class for a string-based user interface.
Definition: UserInterface.H:32
virtual Type type() const =0
Derived classes must implement this and return their interface type.
virtual ~UserInterface()
Destructor.
Definition: UserInterface.C:26